Drilling machine



C. WHITTET DRILLING MACHINE Filed Sept. 28, 1927 2 Sheets-Sheet 1 alagal I N VEN TOR.

A TTORNEY.

Aug. 6, 1929. WHI 1,723,592

DRILLING MACHINE Filed Sept. 28, 1927 2 Sheets-Sheet 2 I ,1" l ATTORNEY.

Patented Aug. 6, 1929.

1,723,5llll CLAUDE WHIT'IET, OF HAVANA, ILLINOIS.

DRILLING MAClEIINE.

Application filed September 28, lllQ/F.

This invention relates to new and useful improvements in. drillingnurchiues and more especially to what is known as the walking beam.

The device con: -;ists iu the novel ieatures of construction,combination and arrangoniont of parts illustrated in the acconuianyingdrawings and more particularly pointed out in the appended claims.

In the accompanying drawings, which are for illustrative purposes onlyand are there-- fore not drawn to scale:

Figure 1 is a side elevation, illustrating the a pplication of myinvention and showing the position oi the walking beam and flexibletcnsioning device for the drilling cable.

Figure 2 is a milar view, with the walki up; beam and associated partsin drilling position.

Figure. 3 a horizontal section, taken on line 33 of Figure l and Figure.-l is a vertical transverse section, taken on line l--l of Figure 2,looking in the direction indicated by the arrows.

Referring to the drawings for a more particular description of myinvention and in which drawings like parts are designated by likereference characters throiu hout the several views, my device comprisesthe Samson post A, consisting of the laterally spaced parallel uprights1, which provide a support for the walking beam 2, and between the upperends of which uprights, the walking beam is pivoted by the cross pins orbolts 3. The walking beam 2 is composed oil two corresponding parallelbars or members l held in spaced relation by the end spacing blocks 5and joined together at corresponding ends by the transverse bolts 6,which also extend through the spacing blocks aforesaid.

A flexible tensioning device B for the drill ing cable 6, is used incarrying out my invention, and. comprises the corresponding par-- allelshorter bars 7, pivoted at their inner ends, as at 8, to the upper endsof the two members of? the Samson post A. and a longer bar or link 9.The bar or link 9 is pivotally connected at its inner end, as at 10,between the outer ends of the bars 7 oil: the tensioning' device and isprovided at i ts outer end with the pulley 11. When the parts are in theposition illustrated in Figure 1, as in hoisting and lowering thedrilling tools, the bars 7 ol the flexible tensioning device are in asub stantially horizontal position and the longer bar or link 9 of thelatter disposed at an up- Serial No. 222,437.

ward inclination of approximately degrees. lih'uler these conditions,the pulley ll. is disposed above but adjacent the pulley l2, our- .naledbetween the bars or members 4: ol the walking beam and the drillingcable passes down in. a direct or straight line between said pulleys.

lu drilling, the link 9 oi the flexible tensioning device swung inwardlytogether with the pulley 11, into a vertical position, as shown inFigure 2 and held in such position by the keeper pin 18, which isinserted through the aforesaid pulley and. the (.ipenings 14 in theupper ends of the upright members of the liamson post. My constructionand zlrrangement or the pulleys l l and 11.2, is such as to eliminatefriction on the drilling cable while the drilling tools are inoperation.

l t will be understood that the drilling cable has one end fastened onthe hoisting drum of the drilling rig and carries the drilling tools atits opposite or tree end. The numeral 15 indicates the rig derrick andthe lrame of the drilling rig.

From the foregoing description taken in connection with the drawings, itthought that the construction, operation and advantages of my inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportions and minor details ofconstruction m ay be re sorted to without departing from the princi plesor sacrificing any of the advantages of: my invention as defined .in theappended claims.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. In a device of the character specified, a Samson post, a horizontalwalking beam, pivotally mounted thereon, a pulley journaled to the outerend of the walking beam, a flexible tensioning device for the drillingcable, said device comprising shorter inner bars and an outer longer barprovided at its free end with a pulley, the outer longer bar and saidlast mentioned pulley adapted to extend at an upward inclination ormoved inwardly into vertical position and means for holding said outerlonger bar and pulley in vertical position.

2. In a device of the character specified, a Samson post, a horizontalwalking beam, pivotally mounted thereon, a pulley journaled to one endof the walking beam, a flexible tensioning device for the drillingcable, said degrees or moved inwardly into vertical posidevieecomprising shorter inner bars pivoted tion and a pin adapted to beinserted through to the Samson post and an outer longer bar the Samsonpost, pulley and outer longer 10 pivoted to the shorter inner bars andprovided bar for holding the latter in vertical position.

5 at its free end With a pulley, the outer longer In testimony whereofhe affixes his signabar and said pulley adapted to extend upture. wardlyat an inclination of approximately 45 CLAUDE \VHITTET.

